Fagula Rasa: (`fagyoola `rossa) n. a person one instinctively suspects of being homosexual, but who gives no outward indications of sexual preference at all- not totally effeminate and never exhibiting any of the commonly recognized mannerisms and affectations associated with homosexuals, like a blank slate, but nevertheless giving one the gut feeling that the person in question is gay.

"I get the strange feeling that Bob is gay, but I don't really know why. He's an enigma, a real fagula rasa."